open files limit

One common challenge that both new and experienced Linux users may encounter is the "Too many open files" error. This error occurs when a process tries to open more files than the system's limit allows. Today, we'll delve into what causes this issue and how you can resolve it using the ulimit command. In Linux, everything is treated as a file. Applications interact with these files through file descriptors (FDs). For example, when you open a file, the operating system creates a file descriptor to manage the file operations. Each process in Linux has a limit on how many file descriptors can be opened simultaneously.